548718121817845 has 16 divisors (see below), whose sum is σ = 765282416872320. Its totient is φ = 369886501485504.

The previous prime is 548718121817807. The next prime is 548718121817917.

548718121817845 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 548718121817845 - 2²³ = 548718113429237 is a prime.

It is a super-2 number, since 2×548718121817845² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132861528642 + ... + 132861532771.

It is an arithmetic number, because the mean of its divisors is an integer number (47830151054520).

Almost surely, 2^{548718121817845} is an apocalyptic number.

It is an amenable number.

548718121817845 is a deficient number, since it is larger than the sum of its proper divisors (216564295054475).

548718121817845 is a wasteful number, since it uses less digits than its factorization.

548718121817845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265723061484.

The product of its digits is 160563200, while the sum is 70.

The spelling of 548718121817845 in words is "five hundred forty-eight trillion, seven hundred eighteen billion, one hundred twenty-one million, eight hundred seventeen thousand, eight hundred forty-five".